//*****************************************************************************
// Copyright 2017-2020 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//*****************************************************************************

#pragma once

#include "ngraph/node.hpp"
#include "ngraph/pattern/op/pattern.hpp"

namespace ngraph
{
    namespace pattern
    {
        namespace op
        {
            class True;
        }
    }
}

/// \brief The match always succeeds.
class NGRAPH_API ngraph::pattern::op::True : public Pattern
{
public:
    static constexpr NodeTypeInfo type_info{"patternTrue", 0};
    const NodeTypeInfo& get_type_info() const override;
    /// \brief Always matches, does not add node to match list.
    True()
        : Pattern(OutputVector{})
    {
    }
    bool match_value(pattern::Matcher* matcher,
                     const Output<Node>& pattern_value,
                     const Output<Node>& graph_value) override;
};
